A mobile app, short for mobile application, is a software program designed to run on smartphones, tablets, and other mobile devices. Mobile apps are created for a wide range of purposes and can be downloaded and installed from app stores, such as the Apple App Store for iOS devices and Google Play for Android devices.

Mobile apps have become an integral part of modern life, providing solutions for entertainment, communication, productivity, and more. They offer convenience and often take advantage of the unique capabilities of mobile devices, making them an essential aspect of the mobile ecosystem.